ng-hide or ng-show does not work if its controlled

问题:

I am trying to hide the div if any of the buttons in the ng-repeat is clicked. However it doesn't seem to work, it leads me to think if ng-hide or ng-show won't work if it is controlled from within a ng-repeat?

<div data-ng-hide="showChooseHardware">
    <table class="table">
        <tbody>
            <tr data-ng-repeat="hardware in hardwares">
                <td>{{hardware.name}}</td>
                <td>
                    <button type="button" class="btn" data-ng-click="showChooseHardware=!showChooseHardware"/>
                </td>
            </tr>
        </tbody>
    </table>
</div>

回答1:

This is due to the fact that ng-repeat creates a new scope for each template and due to how prototypal inheritance works in JavaScript (and AngularJS).

Use an object:

$scope.viewModel = { showChooseHardware: false };

HTML:

data-ng-hide="viewModel.showChooseHardware"

And:

data-ng-click="viewModel.showChooseHardware=!viewModel.showChooseHardware"

A great explanation on the issue can be found here.

I recommend using ng-showinstead in this case since the variable is called showChooseHardware.

回答2:

ngRepeat directive creates new scope in every iteration,for every item in array.It can make a problem,which you have.